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Selina solutions for Class 8 Biology chapter 5 - Endocrine System and Adolescence

Selina Concise Biology for Class 8 (2018-19 Session)

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Selina Selina Concise Biology Class 8 (2018-19 Session)

Selina Concise Biology for Class 8 (2018-19 Session)

Chapter 5: Endocrine System and Adolescence

Chapter 5: Endocrine System and Adolescence solutions [Page 0]

Put a tick mark (✓) against the correct alternative in the following statement:

Cortisone hormone is secreted by:

  1. Medulla of adrenal
  2. Cortex of adrenal
  3. Pancreas
  4. Thyroid

 

Put a tick mark (✓) against the correct alternative in the following statement:

Which one of the following hormones stimulates the breakdown of glycogen in the liver into glucose:

  1. Insulin
  2. Adrenaline
  3. Glucagon
  4. Thyroxine

Put a tick mark (✓) against the correct alternative in the following statement:

Which one of the following hormones converts excess of glucose into glycogen:

  1. Glucagon
  2. Thyroxine
  3. Insulin
  4. Adrenaline

Put a tick mark (✓) against the correct alternative in the following statement:

Which one of the following glands is also called master gland:

  1. Pituitary gland
  2. Adrenal gland
  3. Thyroid gland
  4. Ovary

Put a tick mark (✓) against the correct alternative in the following statement:

The emergency hormone to face the danger or to fight is secreted by:

  1. Islets of Langerhans
  2. Adrenal cortex
  3. Pituitary
  4. Adrenal medulla

Put a tick mark (✓) against the correct alternative in the following statement:

Which one of the following endocrine glands produces its hormone in large quantities as a result of emotional stimulation?

  1. Thyroid
  2. Islets of Langerhans
  3. Adrenal medulla
  4. Adrenal cortex

 

Put a tick mark (✓) against the correct alternative in the following statement:

In humans, increased thyroxine production results in (tick the correct answer)

  1. Increased metabolism
  2. Decreased metabolism
  3. Dwarfism
  4. Cretinism

Chapter 5: Endocrine System and Adolescence solutions [Page 0]

What is a hormone?

In table given below, fill in the blanks by naming endocrine glands, the hormones they secrete, and the function they perform, in a normal person.

Match the items in Column A with those in Column B. Column A Column B

Name the source and the function of each of the following hormones:

Hormone Source Function
(a) Glucagon
(b) Thyroxine
(c) Adrenaline
(d) Insulin
(e) Cortisone

What is the difference between an exocrine gland and an endocrine gland?

Why is pituitary gland is called “master gland”?

Briefly write about the importance of physical hygiene during adolescence.

Briefly discuss any four activities which can be practiced to overcome stress.

Chapter 5: Endocrine System and Adolescence solutions [Page 0]

Multiple choice question. Tick (✓) the correct choice:

Chemical control in organisms is brought about by

  1. enzymes
  2. neurons
  3. hormones
  4. all the above.

Multiple choice question. Tick (✓) the correct choice:

Master endocrine gland

  1. thyroid
  2. pituitary
  3. pancreas
  4. adrenal

Multiple choice question. Tick (✓) the correct choice:

The hormone thyroxine is secreted by

  1. pituitary gland
  2. adrenal gland
  3. thyroid gland
  4. pancreas

Multiple choice question. Tick (✓) the correct choice:

Insulin is secreted by

  1. pancreas
  2. pituitary gland
  3. thyroid gland
  4. adrenal gland

Chapter 5: Endocrine System and Adolescence solutions [Page 0]

Fill in the blank:

Hormones are produced by ____________.

Fill in the blank:

The master gland in the body is_____________.

Fill in the blank:

Adrenal glands are present above _________.

Fill in the blank:

The hormone insulin is secreted by ____________.

Fill in the blank:

The hormone thyroxine is secreted by ________________.

Fill in the blank:

Blood pressure is controlled by the endorine gland called __________.

Chapter 5: Endocrine System and Adolescence solutions [Page 0]

State whether the following statement is true (T) or false (F):

Hormones are secreted by ductless glands.

State whether the following statement is true (T) or false (F):

For hormones to be effective in their actions, they are required in sufficiently large quantities.

State whether the following statement is true (T) or false (F):

The adrenal gland helps the body to fight stress.

 

Chapter 5: Endocrine System and Adolescence solutions [Page 0]

Find the odd-one out, giving reason:

Pituitary, adrenal, thyroid, salivary gland

Chapter 5: Endocrine System and Adolescence solutions [Page 0]

Name the following:

Five endocrine glands found in human body.

Name the following:

Master gland in human body.

Chapter 5: Endocrine System and Adolescence solutions [Page 0]

Define the following:

Hormones

Define the following:

Endocrine glands

Chapter 5: Endocrine System and Adolescence solutions [Page 0]

Describe two characteristic features of hormones.

Draw an outline figure of the human body and show the location of different endocrine glands.

What causes diabetes?

Which gland secretes insulin?

What happens when the thyroid gland secretes less hormone?

Chapter 5: Endocrine System and Adolescence solutions [Page 0]

Given below is an outline of the human body. Draw and label on the diagram.

  1. the gland that secretes insulin.
  2. the gland that produce adrenaline.

Name the disease caused by failure of the gland to produce insulin.

Chapter 5: Endocrine System and Adolescence

Selina Selina Concise Biology Class 8 (2018-19 Session)

Selina Concise Biology for Class 8 (2018-19 Session)

Selina solutions for Class 8 Biology chapter 5 - Endocrine System and Adolescence

Selina solutions for Class 8 Biology chapter 5 (Endocrine System and Adolescence) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Selina Concise Biology for Class 8 (2018-19 Session) solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com are providing such solutions so that students can prepare for written exams. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 8 Biology chapter 5 Endocrine System and Adolescence are Endocrine System - Two Types of Glands- Exocrine, Endocrine, Concept of Hormone, Hormonal Glands - (Thyroid, Adrenal, Pancreas, Pituitary);, Location and Function of Hormonal Glands, Adolescence and Accompanying Changes - Physical and Emotional Changes in the Body During Adolescence, Adolescence and Accompanying Changes - Importance of Personal Hygiene, Concept of Stress Management.

Using Selina Class 8 solutions Endocrine System and Adolescence exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 8 prefer Selina Textbook Solutions to score more in exam.

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